add bindings and fix documentation

bindings/python/tests/test_binding.py

@@ -0,0 +1,12 @@
+from unittest import TestCase
+
+from tree_sitter import Language, Parser
+import tree_sitter_django
+
+
+class TestLanguage(TestCase):
+    def test_can_load_grammar(self):
+        try:
+            Parser(Language(tree_sitter_django.language()))
+        except Exception:
+            self.fail("Error loading Django Parser grammar")